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Effects of Loading Paths on Hydrodynamic Deep Drawing with Independent Radial Hydraulic Pressure of Aluminum Alloy Based on Numerical Simulation

ISSN号：1005-0302
期刊名称：《材料科学技术学报：英文版》
时间：0
分类：TG146.2[金属学及工艺—金属材料;一般工业技术—材料科学与工程;金属学及工艺—金属学]
作者机构：[1]School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China, [2]College of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China
相关基金：This paper is funded by the National Outstanding Youth Foundation of China. （No.50525516）

作者： Xiaojing LIU[1,2], Yongchao XU[1], Shijian YUAN[1]

关键词：水压, 铝合金, 数字模拟技术, 物理性质, Hydrodynamic deep drawing, Numerical simulation, Independent radial hydraulic pressure, 5A06 aluminum alloy

中文摘要：

为了为低粘性材料和大高度直径比率遇见形成的要求，分开，有独立光线的水力的压力的深绘画的水动力学(HDD ) 的一个新过程被建议。调查与独立光线的水力的压力在 HDD 上装载路径的效果， 5A06 铝合金的形成的过程有一个半球的底部的圆柱的杯被数字模拟学习。由基于 LS-DYNA3D 采用动态明确的分析软件 ETA/Dynaform，在表厚度分发和表面质量上装载路径的效果被分析。在形成的限制图(FLD ) 上装载路径和部分的种类地位的光线的水力的压力的相应关系也被讨论。结果显示一个声音在液体房间压力之间匹配，独立光线的水力的压力能制止在半球底部的严肃的变瘦并且能通过调整光线的水力的压力减少光线的张力的种类并且改变种类路径。因此，铝的绘画限制有一个半球的底部的圆柱的杯能显著地被增加。

英文摘要：

In order to meet the forming demands for low plasticity materials and large height-diameter ratio parts, a new process of hydrodynamic deep drawing （HDD） with independent radial hydraulic pressure is proposed. To investigate the effects of loading paths on the HDD with independent radial hydraulic pressure, the forming process of 5A06 aluminum alloy cylindrical cup with a hemispherical bottom was studied by numerical simulation. By employing the dynamic explicit analytical software ETA/Dynaform based on LS-DYNA3D, the effects of loading paths on the sheet-thickness distribution and surface quality were analyzed. The corresponding relations of the radial hydraulic pressure loading paths and the part＇s strain status on the forming limit diagram （FLD） were also discussed. The results indicated that a sound match between liquid chamber pressure and independent radial hydraulic pressure could restrain the serious thinning at the hemisphere bottom and that through adjusting radial hydraulic pressure could reduce the radial tensile strain and change the strain paths. Therefore, the drawing limit of the aluminum cylindrical cup with a hemispherical bottom could be increased significantly.

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